Rock Identifier

Category

Gemstone

Browse gemstone specimens identified by the Rock Identifier community.

Learn about Gemstone in the encyclopedia

Achroite

Alexandrite

Almandine Garnet

Almandine Garnet

Amber

Andamooka Opal

Andesine

Andesine-Labradorite

Andesine-Labradorite

Andradite Garnet

Andradite Garnet

Ant Hill Garnet

Ant Hill Garnet

Aquamarine

Australian Opal

Australian Opal

Aventurine Feldspar

Aventurine Feldspar

Quartz (specifically Clear or Rose Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (specifically Clear or Rose Quartz)

Silicon Dioxide (SiO2)

Quartz (Field Specimen) (Silicon Dioxide (SiO2)) — mineral

Quartz (Field Specimen)

Silicon Dioxide (SiO2)

Quartz (Iron-stained) (Silicon Dioxide (SiO2)) — mineral

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Amazonite (K(AlSi3O8)) — mineral

Amazonite

K(AlSi3O8)

Sunstone (Feldspar variety) ((Na,Ca)(Si,Al)3O8 - Plagioclase Feldspar) — mineral

Sunstone (Feldspar variety)

(Na,Ca)(Si,Al)3O8 - Plagioclase Feldspar

Feldspar (with Quartz / Iron Staining) (Potassium Feldspar / Plagioclase (KAlSi3O8 - NaAlSi3O8 to CaAl2Si2O8)) — mineral

Feldspar (with Quartz / Iron Staining)

Potassium Feldspar / Plagioclase (KAlSi3O8 - NaAlSi3O8 to CaAl2Si2O8)

Rutilated Quartz Sphere (Silicon Dioxide with Titanium Oxide inclusions (SiO2 with TiO2)) — mineral

Rutilated Quartz Sphere

Silicon Dioxide with Titanium Oxide inclusions (SiO2 with TiO2)

Black Obsidian (Volcanic Glass (SiO2 with impurities)) — igneous

Black Obsidian

Volcanic Glass (SiO2 with impurities)

Potassium Feldspar (Orthoclase / Microcline) (KAlSi3O8 (Potassium Aluminum Silicate)) — mineral

Potassium Feldspar (Orthoclase / Microcline)

KAlSi3O8 (Potassium Aluminum Silicate)

Amazonite (Microcline (Amazonite variety), KAlSi3O8) — mineral

Amazonite

Microcline (Amazonite variety), KAlSi3O8

Agate (Carnelian / Chalcedony) (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — mineral

Agate (Carnelian / Chalcedony)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Dalmatian Stone and Lapis Lazuli (Dalmatian Stone (peralkaline rock) with Lapis Lazuli (metamorphic rock)) — igneous

Dalmatian Stone and Lapis Lazuli

Dalmatian Stone (peralkaline rock) with Lapis Lazuli (metamorphic rock)

Milky Quartz Pebble (Quartz (Silicon Dioxide, SiO2)) — mineral

Milky Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Dendritic Agate / Chalcedony (Silicon Dioxide (SiO2) with Manganese/Iron oxide inclusions) — mineral

Dendritic Agate / Chalcedony

Silicon Dioxide (SiO2) with Manganese/Iron oxide inclusions

Yellow Quartz / Chalcedony (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz / Chalcedony

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Green Jasper (Silicon Dioxide (SiO2) with iron silicate inclusions) — sedimentary

Green Jasper

Silicon Dioxide (SiO2) with iron silicate inclusions

Milk Quartz (Snow Quartz) (Silicon Dioxide (SiO2)) — mineral

Milk Quartz (Snow Quartz)

Silicon Dioxide (SiO2)

Lapis Lazuli (in jewelry setting) (Na8[Al6Si6O24]n(S,Cl,SO4,OH)2 (Lazurite-rich rock)) — metamorphic

Lapis Lazuli (in jewelry setting)

Na8[Al6Si6O24]n(S,Cl,SO4,OH)2 (Lazurite-rich rock)

Labradorite (in Matrix) (Labradorite ((Ca, Na)(Al, Si)4O8)) — mineral

Labradorite (in Matrix)

Labradorite ((Ca, Na)(Al, Si)4O8)

Sunstone / Peach Moonstone (Feldspar variety) (Potassium Aluminum Silicate (KAlSi3O8)) — mineral

Sunstone / Peach Moonstone (Feldspar variety)

Potassium Aluminum Silicate (KAlSi3O8)

Tiger's Eye (Pseudomorph of Quartz after Crocidolite (SiO2)) — metamorphic

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Citrine Quartz / Iron-stained Quartz (Silicon Dioxide (SiO2)) — mineral

Citrine Quartz / Iron-stained Quartz

Silicon Dioxide (SiO2)

Aquamarine (Beryl) (Beryllium aluminum silicate (Be3Al2Si6O18)) — mineral

Aquamarine (Beryl)

Beryllium aluminum silicate (Be3Al2Si6O18)

Garnet (Almandine) (Almandine (Fe3Al2(SiO4)3)) — metamorphic

Garnet (Almandine)

Almandine (Fe3Al2(SiO4)3)

Chrysoprase (Nickel-bearing Chalcedony (SiO2 with inclusions of Ni-compounds like kerolite or pimelite)) — mineral

Chrysoprase

Nickel-bearing Chalcedony (SiO2 with inclusions of Ni-compounds like kerolite or pimelite)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Dalmatian Stone (Dalmatian Stone (a variety of aplite)) — igneous

Dalmatian Stone

Dalmatian Stone (a variety of aplite)

Milky Quartz (Quartz (SiO2)) — mineral

Milky Quartz

Quartz (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Citrine (SiO2 (Silicon Dioxide)) — mineral

Citrine

SiO2 (Silicon Dioxide)

Amethyst (Silicon Dioxide with Iron Impurities (SiO2)) — mineral

Amethyst

Silicon Dioxide with Iron Impurities (SiO2)

Quartz (Milky Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Quartz (Raw and Water-worn) (Silicon Dioxide (SiO2)) — mineral

Quartz (Raw and Water-worn)

Silicon Dioxide (SiO2)

Sunstone (Heliolite (Aventurine Feldspar, (Ca,Na)((Al,Si)2Si2O8))) — mineral

Sunstone

Heliolite (Aventurine Feldspar, (Ca,Na)((Al,Si)2Si2O8))

Sodalite (Sodalite (Na8(Al6Si6O24)Cl2)) — mineral

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Sunstone (Oligoclase (Feldspar variety)) — mineral

Sunstone

Oligoclase (Feldspar variety)

Amethyst (Silicon dioxide with iron impurities (SiO2 + Fe3+)) — mineral

Amethyst

Silicon dioxide with iron impurities (SiO2 + Fe3+)

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Tektite (Indochinite) (Tektite (High-silica natural glass)) — mineraloid

Tektite (Indochinite)

Tektite (High-silica natural glass)